Control method of automatic gearshift vehicle

The invention discloses a control method of an automatic gearshift vehicle. The control method comprises the following steps that when a controller receives a brake/acceleration instruction, an air cylinder of at least one engine is controlled to stop/ start working, and at this moment, the running load of the engine is increased; a monitoring system monitors rotation speed of the engine and driving speed of the vehicle; according to the monitoring result, gear downshifting/ gear upshifting of a gearbox is executed; the load of the engine continues to be monitored; when it is monitored that the load of the engine exceeds a rated load, it shows that the gearbox of the vehicle fails. By means of the control method, gear shifting of the automatic gearshift vehicle can be smoothly controlled,and according to monitored running parameters of the engine, fault diagnosis can be made on the vehicle gearbox. 本发明公开了种自动挡汽车的控制方法，包括以下步骤：当控制器接收到制动/加速指令时，控制至少个发动机的汽缸停止/启动工作，此时发动机的运转负载增加；监测系统对发动机转速和汽车行驶速度进行监测；根据监测结果执行变速箱的降挡/升挡